So sit back, relax and let's toast Zac's quarter of a century on planet celeb. It'd be a duller (and uglier) place withiout him.

Zac Efron: Top 25 Sexiest Pics

Zac Efron: Top 25 Sexiest Pics

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US actor Zac Efron takes part in the TV

US actor Zac Efron takes part in the TV show 'Le Grand Journal' on the set of French TV Canal+ at the 65th Cannes film festival on May 23, 2012 in Cannes. AFP PHOTO / LOIC VENANCE (Photo credit should read LOIC VENANCE/AFP/GettyImages)